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JulijaS [17]
3 years ago
5

If y=3x+2,find the value of y when x=-3

Mathematics
2 answers:
Vikki [24]3 years ago
8 0
Y = 2x + 5  this is a hard question but ALWAYS REMEMBER UNITS and youll get it it sometimes take a little while but i can do them in my head now took me 1 year to do it in my head dont give up :) i believe in u
Mars2501 [29]3 years ago
6 0
Y=3x+2 when x=-3
=> y= 3(-3)+2 = -9+2 =-7
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A rectangular
igor_vitrenko [27]
A = length x width

15,000 = (w + 30) x w
15,000 = w^{2} + 30w
0 = w^{2} + 30w - 15,000

Use quadratic formula to find that  w= -15 + or - 5\sqrt{609}. Because distance cannot be negative, the width is -15 + 5\sqrt{609}meters or approximately 108.39 meters. This means that the length is approximately 138.39 meters.


8 0
3 years ago
I need help! who ever get this right and explain nicely then I make you brainlist.
Lelechka [254]

Answer:

1. 64

2. 72 square feet

3. 31.5 square feet

Step-by-step explanation:

For the first one use the equation A=bh.

Plug in your values: A=12.8*5.

Solve: A=64

For the second one multiply 8*3 which gives you 24. Next multiply that by 3 to give you 72 square feet.

For the third one multiply 9 by 3.5 to get 31.5 square feet.

5 0
3 years ago
Solve for x:1/20 - 1/4x<1/5-2/5x​
a_sh-v [17]

Step-by-step explanation:

1/20-1/4 ×<1/5-2/5×

<h3>collection of like terms</h3>

1/20+1/5 <-2/5×-1/4×

<h3>= 1/4 <-13/20×</h3>
3 0
3 years ago
Find A. Round to the nearest tenth.
Marianna [84]

Answer:

27.8 degrees

Step-by-step explanation:

Wasn't it 'a,' not 'A,' that you wanted?

The ratio a/ 30 is the cosine of the angle 22 degrees, which in turn is 0.927:

                          a

Then 0.927 = -------    which yields a = 30(0.927) = 27.8 degrees

                         30

3 0
3 years ago
What is the lengh of a arc wich is a quater of a circle and the adius of that circle is 4,8 cm
Serga [27]

Answer:

eee amiga que quiere decir eso no lo estiendo

5 0
3 years ago
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